Factorial Final Surge | JEE 2026 | JEE Mains 2026 + JEE ADV. 2026
Curated by: Factorial Academy (60 videos)
Divisors & Combinations Complete Guide | Number of Divisors, Proper Divisors & Counting Tricks | JEE Maths | Factorial Final Surge In continuation of our Permutation & Combination series, this session connects Number Theory with Counting Techniques. Learn how prime factorization directly gives: ✓ Total number of divisors ✓ Proper divisors ✓ Odd/Even divisors ✓ Divisors divisible by a number ✓ Sum of divisors ✓ Number of ways to express a number as product of divisors ✓ Combinatorics approach to divisor counting A very powerful and frequently tested concept for Joint Entrance Examination – Main and Joint Entrance Examination – Advanced. ⸻ 📌 Question Discussed Consider the number N = 75600 (a) Number of divisors (b) Number of proper divisors (c) Number of odd divisors (d) Number of even divisors (e) Number of divisors divisible by 5 (f) Number of divisors divisible by 10 (g) Sum of all the divisors (h) Number of ways in which N can be resolved as a product of two divisors (i) Number of ways in which N can be resolved as a product of two divisors which are relatively prime ⸻ If you master this approach, divisor problems become 30–40 second questions in exams. Telegram for notes & updates: 👉 https://t.me/academyfactorial Part of Factorial Final Surge series. #NumberTheory #Divisors #PermutationCombination #CountingTechniques #JEEMaths #JEE2026 #JEEMains2026 #JEEAdvanced #FactorialFinalSurge #FactorialAcademy